Re: [PATCH 2/2] IB/rdmavt: modify rdmavt/qp.c for UML

[Christoph Hellwig]

Yikes, this rdmavt code is completely fucked up and a very good example
why people should not use __user casts or random internal helpers.

The right fix is to remove this crap entirely, and if the rdmavt
maintainer think that they absolutely need a non-temporal memcpy they
need to work to add a core API for it.